Electrical heater.



F. T. KITCHEN.

ELECTRICAL HEATER. APPLICATION FILED AUG-28' 1914.

Patented July 27', 1915.

WITNESSES! m ERIGK *lfi KITCHEN, 01". NEW YQRK, N. Y., ASSIGNOR T0 GOLD CAR HEATING d;

"EZENQ GQMIFANY, lilEl/V 5563K, N. Y., A CORPQRATION OF NEW YQBK.

ELECTRICAL HEATER.

specification of Letters Patent.

P tented July 2'3; 19155 To 1212 whom it may concern Be it known that l, Fnnnnnion T.

ltrrcnmn a citizen of the United States of America, residing in W est New Brighton, Staten Island, in the borough of Richmond, city and idtate of New York, have invented certain new and useful Improvements in Electrical Heaters, of which the following is'a specification. Y My invention relatesto electrical heaters particularly of the type "used in heating railway passenger cars, trolley cars; etc, and has for its object to provide a heater of such, type which shall be simple and economical in construction, and will permit of the ready removal of a heating unit from the casing and the insertion of a fresh heating unit therein without withdrawing the car from service and consequently without the delay usually attendant upon this operation. and the loss of service of the car and eXpense connected therewith.

li/ly invention consistsin a heating unit which is capable of easy insertion and removal from the casing and wherein the act of insertion or removal causes the opening or closing of the heating circuit.

A desirable form in which my invention may be embodied is illustrated in the accompanying drawing wherein- Figure l is a top view of a portion of a we, sing illustrating one heating unit in place in accordance with my invention. Fig. 2 is a cross section on the line 2'2 Fig.

My invention is illustrated in connection with a heater of the type wherein a core A is provided which is formed of insulating material usually such as porcelain, and has a spi"al groove which receives the helically coiled resistance wire B which is the heating element. The heater is provided with a central core C usually a metallic rod which fulfils the function of holding the heater together when such function is desired and when the heater is used in multiple pro vides a convenient return wire. Such multiple arrangement is illustrated in the accompanying drawings, but my invention is equally applicable to a heater connected in series.

My invention comprises the use of supports whici are located within the casing and which receive and hold the heating units both by friction and preferably also by spring action. These supports or brackets are in electrical connection with the feed and return wires respectively and as the heating unit is inserted in them contact is made between the said connections to the feed and return wires and like connections to theheating wires on the core, whereby the in-- sertion of the heating unit closes the circuit through the resistance wire. The particular manner in which. the invention is constructed as illustrated comprises a spring clip or yoke D for each of the heating units. The heater herein illustrated is adapted to receive two heating units. lhese are identical in construction and are connected in the same manner to the electrical conductors, and may be used one at a time or both. The connection or" only one of them will be described and this description will also apply to the other one. This yoke D has means whereby when the heating unit is inserted therein connection will be made between the main wire and a terminal of the heating wire on the heating unit. A convenient way of making such connection is by "forming the yoke D of conducting material such as spring brass and by having an eye E therein to which the feed wire F may be attached. The heating unit, which as a whole I shall designate as G is provided at one end with a terminal for the heating wire B, and this terminal may well be in the form of a band H which surrounds the heating unit adjacent the end thereof and is electrically connected to the resistance wire 13 at I. This connection I will obviously be made in such manner as to permit the heating unit to be inserted when a band H is employed with any portion of the band in contact with the spring yoke D so that no care need be exercised in inserting the same. Obviously if a different kind of terminal to the resistance wire than the band H were employed, and if a different kind of terminal than the spring yoke itself to the feed wire F were employed, care might have to be employed in assembling to bring the respective terminals to a contact. The resistance wire B, in the construction shown, is connected at its opposite end to the rod C in a suitable manner, so that the current shall be returned therethrough. One manner or eliecting such connection is by a band J upon the end of the rod to which the resistance wire is connected electrically A washer or L of conducting material is forced into electrical connection with the said. band I a nut 0' upon the reel C. At the opposite end of therocl C a boss or stud. of con-- ducting material is secured thereon and this is preferably made rouncl and is adapted. pass within a spring clip or yoke N v hich is similar to the yoke Band. has a connection at O for the return wire P By means of the foregoing the insertion of the heating unit 61' within the sprir clips Q, N and would cause connect to be made with the feed and l'e'ttilll wires F and 1? through the terminals of t sistance wire B at H have llluS- trated a spring clip or yoke i i situated at the opposite end. of the he unit and is well to support encl and permit the easy insertion oi. heating unit therein and 11S removal from when desired In the CO'l'lSlJltiOljiOIl shown this spring sugport Q5 need not be electrical circuit. If however, the heat unit were connected in series the sprir' port Q, would be a eluplieate of eup oria and would furnish connection to the return Wire.

lhe heater supports herein illustra connected to and supporteel upon the ger car. It is not herein claimed as subject matter or" separate ap patent Serial llo. 861,3?3, 9 Bailey, September 12 plate R to which the end. blocks S S are cured as by the bolts shown and llllo$ end. blocks support the said spring; yoke 1, N and Q in some suitable manner for instance, by the bolts illustrated. The said end blocks are preferably formed of insulating terial such as porcelain. They are supporteclupon the trainee l, T in a suitable manner as for instance by straps U which pass beneath the casing and above the ire iesq The casing is made in two halves of which the base or bottom It supports the heating units and the top or cover V supports a shield or bafile plate W which is clesignecl to reflect the heat away from the seat S. The end plates of the casing are removed in the drawings. The invention is not limited in its employment to a casing of this character although it is Well adapted to use with the same. It may equally well be used. in connection with the ordinary type of easing having a solid back and a perforated cover plate which is usually located behinil the riser of the ordinary lengthwise seat of trolley cars.

The end blocks are not claimed herein but form the subject of a separate application Serial No. 855,351, filed by b. Bailey August 6, 1914.

. have 1 My wish it to be unrloistoorl is limited the precise c as construction may "e c v ferent of gettingthe posi' through h hrough nested one a nular rounding said core .3

r ef and electrie an yolzes to and. StClS of adajoteo to rec unit am heater un t opening i removal yokes LC nested resneet' whereby f J r .serteol in.

said yokes in any Luce mic. close the cult through sairl v l'ri an electric i casin g a removable c unit, means for supportiii .t within the casing comp l 4 126 aapted to receive anal l said; yolres being located ingaiicl between towarci re eive one heater 139 by said heater unit may be inserted in said; yeke in any position and close the circuit.

in Witness whereof, I have hereunto signed my name in the presence of two subscribing Witnesses.

rennneren 'r. KITCHEN.

Witnesses HENRY M. Tenn, FRED Wm'rn. 

